You wont find Chil Sung Chil Rho, but if you go down to the "Superior Tang Soo Do Forum" upnorthkyosa has several of them..
His may only go to Sa Rho however...
--josh
Good luck! If you find them, please share them here. To the best of my knowledge, they exist only by being passed down. They are not in any of GM Hwang Kee's works and I have not found any other sources that even describe or illustrate them. EDIT: But if you are interested in find them written and illustrated, I suggest looking in to GM Pak, Ho Sik's "Complete Tang Soo Do" for Il and Ee; GM Hwang Kee's "Red Belt Guide" for Il, Ee, and Sam, and GM Lee, Kang Uk's "Tang Soo Do" for Il, Ee, and Sam.
I also understand that Chil Sung Chil Ro is a very tightly held hyung not known by many people.